On 7/27/22 4:51 AM, Pavel Begunkov wrote:

quoted

With your zc_v5 branch (plus the init fix on using msg->sg_from_iter),
iperf3 with io_uring support (non-ZC case) no longer shows completions
with incomplete sends. So that is good improvement over the last time I
tried it.

However, adding in the ZC support and that problem resurfaces - a lot of
completions are for an incomplete size.

Makes sense, it explicitly retries with normal sends but I didn't
implement it for zc. Might be a good thing to add.

Yes, before this goes it. It will be confusing to users to get
incomplete completions when using the ZC option.